Conclusions Colectomy is highly effective in alleviating symptoms in patients with STC,and pelvic floor disorder of OOC should be treated simultaneously.

• 结论结肠切除术是治疗STC的有效方法，但应同时处理存在的OOC盆底变化（直肠内脱垂、子宫脱垂后倒、盆底下降及盆底疝）。